Jargon File (4.4.4, 14 Aug 2003):

OP
 //

   [Usenet; common] Abbreviation for "original poster", the originator
of
   a particular thread.


Jargon File (4.4.4, 14 Aug 2003):

op
 /op/, n.

   1. In England and Ireland, common verbal abbreviation for `operator',
   as in system operator. Less common in the U.S., where sysop seems
to
   be preferred.

   2. [IRC] Someone who is endowed with privileges on IRC, not limited
   to a particular channel. These are generally people who are in charge
   of the IRC server at their particular site. Sometimes used
   interchangeably with CHOP. Compare sysop.


V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006):

OP
       Oracle9iAS Personalization (Oracle, DB)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006):

OP
       Original Poster (slang, Usenet)